As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT EXPERIENCED OZONE ENCOUNTER. DESCENDED TO FL290. FLIGHT CREW WAS ON O2 FOR A SHORT DURATION DUE TO STRONG ODOR IN THE COCKPIT. COCKPIT OXYGEN PRESSURE WAS AT 1070 PSI, BELOW MINIMUM SPECIFICATIONS. SERVICED OXYGEN. CAUSE OF ODOR NOT ESTABLISHED.